I've always loved the way the band played Bird Song in 1972. They take it out there to a certain point but don't get to crazy. I actually like the fact that they kept them under 12 or 13 minutes for the most part. That type of restraint, to me, showed they were maturing as a band. I think the ability to know when a jam should stop is just as important as trying to find out how far it can go and it seems to me that some of the Bird Songs in 72 do that perfectly.